2024 ICD-10-CM Diagnosis Code A92.30

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West Nile virus infection, unspecified

  • A92.30 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2024 edition of ICD-10-CM A92.30 became effective on October 1, 2023.
  • This is the American ICD-10-CM version of A92.30 – other international versions of ICD-10 A92.30 may differ.

Applicable To

  • West Nile fever NOS
  • West Nile fever without complications
  • West Nile virus NOS

The following code(s) above A92.30 contain annotation back-references

 that may be applicable to A92.30:

  • A00-B99  Certain infectious and parasitic diseases
  • A92  Other mosquito-borne viral fevers
  • A92.3  West Nile virus infection

Approximate Synonyms

  • Disease due to west nile virus
  • West nile virus infection

Clinical Information

  • A mosquito-borne viral illness caused by the west nile virus, a flavivirus and endemic to regions of africa, asia, and europe. Common clinical features include headache; fever; maculopapular rash; gastrointestinal symptoms; and lymphadenopathy. Meningitis; encephalitis; and myelitis may also occur. The disease may occasionally be fatal or leave survivors with residual neurologic deficits. (from Joynt, Clinical Neurology, 1996, ch26, p13; lancet 1998 sep 5;352(9130):767-71)
  • West nile virus (wnv) is an infectious disease that first appeared in the United States in 1999. Infected mosquitoes spread the virus that causes it. People who get wnv usually have no symptoms or mild symptoms. The symptoms include a fever, headache, body aches, skin rash, and swollen lymph glands. They can last a few days to several weeks, and usually go away on their own.if west nile virus enters the brain, however, it can be life-threatening. It may cause inflammation of the brain, called encephalitis, or inflammation of the tissue that surrounds the brain and spinal cord, called meningitis. A physical exam, health history and laboratory tests can diagnose it.older people and those with weakened immune systems are most at risk. There are no specific vaccines or treatments for human wnv disease. The best way to avoid wnv is to prevent mosquito bites:
    • use insect repellent
    • get rid of mosquito breeding sites by emptying standing water from flower pots, buckets or barrels
    • stay indoors between dusk and dawn, when mosquitoes are most active
    • use screens on windows to keep mosquitoes out

ICD-10-CM A92.30 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

  • 865 Viral illness with mcc
  • 866 Viral illness without mcc

Convert A92.30 to ICD-9-CMCode History

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change
  • 2024 (effective 10/1/2023): No change

Diagnosis Index entries containing back-references to A92.30: